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ps- hardback copies

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ps- hardback copies [#permalink]

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New post 06 Oct 2008, 16:12
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There were 36,000 hardback copies of a certain novel sold before the paperback version was issued. from the time the first paperback copy was sold until the last copy of the noverl was sold, 9 times as many paperback copies as harback copies were sold. if a total of 441,000 copies of the novel were sold in all, how many paperback copies were sold?

ans: 364,500

can you help solve this?

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Re: ps- hardback copies [#permalink]

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New post 06 Oct 2008, 18:57
Total copies =441000
since 36000 copies of HB were already sold, copies sold in our comparison =441000-36000=405000
NOw HB+PB=405000
PB=9*HB
10*HB=405000
Solving HB=40500
PB=9*HB=364500

andreasonlinegr wrote:
There were 36,000 hardback copies of a certain novel sold before the paperback version was issued. from the time the first paperback copy was sold until the last copy of the noverl was sold, 9 times as many paperback copies as harback copies were sold. if a total of 441,000 copies of the novel were sold in all, how many paperback copies were sold?

ans: 364,500

can you help solve this?

Kudos [?]: 526 [0], given: 0

Re: ps- hardback copies   [#permalink] 06 Oct 2008, 18:57
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ps- hardback copies

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